I thought sibling "encounters" were sterile anyway as nature's protection against inbreeding? Besides you can spoon without the sex. But yeah I think cats do have emotions but maybe in a slightly different sense to humans. My boyfriend's remaining cat lost interest in drinking milk after his mother died, despite having loved milk before.

Seriously, the CIA are outside my door? Time to play the adult interest films involving two adult males.

species doesn't matter, there is no mechanism in nature to create sterility in close relatives- indeed sterility tends to occur from matching things which are too *distantly* related, not too closely related.
And really? This thread has devolved into a discussion of pet incest?

Love it, wish I had the money and/or the know how. Would have my own air force of pooch helicopters. But do think that might get one locked up in a bit of a padded cell in this country. but damn, wish I could give it a try. If this works people might soon be able to do the same with dead relatives, which could prove a bit spooky, but a hell of a lot of fun.